80216666725 has 24 divisors (see below), whose sum is σ = 107201888640. Its totient is φ = 59191696320.

The previous prime is 80216666681. The next prime is 80216666801. The reversal of 80216666725 is 52766661208.

It is a happy number.

It is not a de Polignac number, because 80216666725 - 2¹¹ = 80216664677 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 335112 + ... + 522238.

It is an arithmetic number, because the mean of its divisors is an integer number (4466745360).

Almost surely, 2^80216666725 is an apocalyptic number.

It is an amenable number.

80216666725 is a deficient number, since it is larger than the sum of its proper divisors (26985221915).

80216666725 is a wasteful number, since it uses less digits than its factorization.

80216666725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188469 (or 188464 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 80216666725 in words is "eighty billion, two hundred sixteen million, six hundred sixty-six thousand, seven hundred twenty-five".